Please answer all parts , thanks
b. Using α=0.05, test the significance of the population
coefficient of determination.
c. Construct a 95% confidence interval for the average MPG of a
2.4-cubic liter engine. (lcl & ucl)
d. Construct a 95% prediction interval for the MPG of a
2.4-cubic liter engine. (lpl & upl)
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Suppose an environmental agency would like to investigate the relationship between the engine size of sedans, x, and the miles per gallon (MPG), y, they get. The accompanying table shows the engine size in cubic liters and rated miles per gallon for a selection of sedans. The regression line for the data is y = 39.6408 - 5.3593x. Use this information to complete parts a through d. Click the icon to view the table showing engine size and MPG for 9 car models. a. Calculate the coefficient of deterrnination. R2 = (Round to three decimal places as needed.) i Table of Engine Size and MPG Car Model A Model B Model C Model D Model E Model F Model G Model H Modell Engine Size 2.4 2.3 2.4 3.1 3.5 2.1 2.6 2.2 3.8 MPG 26 31 24 20 22 29 23 30 21 Print Done Enter your answer in the answer box and then click Check Answer. ? 6 parts 6 Clear All remaining Check Answer
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